
#canvas {
    position: absolute;
    z-index: 10;
    top:2000;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: none;
}
#hovertreecontainer {
    display: table;
    position: absolute;
    z-index: 20;
    width: 100%;
    height: 100%;
    text-align: center;
    cursor: none;
    left: 15px;
}